Camila Cabello Leaves Fifth Harmony Concert Early Due to 'Anxiety'

Fourth Harmony? Camila Cabelloapologized to fans after leaving her band Fifth Harmony's St. Louis, Missouri, concert early on Friday

, September 2.

"Hi Missouri, sorry I couldn't finish the set last night," the 19-year-old singer wrote on Snapchat after the show. "Was having too much anxiety and couldn't finish it. I love u. I'm truly sorry."

PHOTOS: Stars in Concert!

According to the St. Louis Post-Dispatch, Cabello left the stage after the girl group performed "Bo$$," despite having seven songs left in their set, including encore hits "Worth It" and "Work From Home."

The local news outlet reported that a member of Fifth Harmony explained to the audience that Cabello left because of a wardrobe malfunction. However, she never returned to the stage.One fan shared a video on Twitter of the girl group taking their final bow at the end of Friday night's concert with Cabello noticeably missing.

Before the performance at the Hollywood Casino Ampitheatre, the singertweeted, "Just wanna sleep for 3 days."

Feud and split rumors have been swirling around Fifth Harmony for months, particularly after Cabello teamed up with music producer Benny Blancoearlier this year for a solo song. However, bandmate Normani Kordei denied drama allegations on Twitter earlier this month."For those of you who enjoy speculating and creating drama that doesn't exist, please keep in mind that myself and the other girls in the group are PEOPLE," Kordei, 20, tweeted. "We feel hurt and sadness just like everyone else."

"The smartest thing you can do is recognize that making assumptions and passing judgment on others is wrong," she continued. "I am here to offer great music and performance along with my girls. This is our story so let us write it our way, instead of you trying to write it for us."